Hi. I believe DNA test proved that Gingin clone and Mendoza clone are not identical. Can you confirm?
Hey, Bo Young! Confirming that a study by Roach, Bourneman, and Schmidt proves their slight differences. The Guide is updated to reflect that. Thanks!
"Genetic analysis of the Australian clone Gingin, the American clone OF Chard and the Argentinian clone Mendoza suggests that all three grapevine clones share a recent common progenitor. Furthermore, the genetic relationships are consistent with Gingin being an early selection of the UC Davis clone Chardonnay-1. The phylogeny shows that Mendoza shares the same progenitor as both Gingin and OF Chard but has diverged significantly since. The 60-year old mystery surrounding the origins of Gingin has been solved, with its origins now tracing back almost 90 years to a foundation vineyard in California at the end of prohibition."